From: ts <decoux@...>
Date: 2003-01-04T02:23:55+09:00
Subject: Re: toplevel modules and classes

>>>>> "E" == Eugene Scripnik <Eugene.Scripnik@itgrp.net> writes:

E> OK, another question. Module#constants return constants accessible
E> in this module. But Class#constants produces the same output as
E> Object.constants (Class itself is an Object, right?). How do I get all

 no, no you don't have the same output

pigeon% ruby -e 'class A; B = C = 12; end; p (A.constants - Object.constants)'
["B", "C"]
pigeon% 

E> modules and classes defined in this particular class?

 but you can't use this directly, because of this problem

pigeon% ruby -e 'class A; B = A = 12; end; p (A.constants - Object.constants)'
["B"]
pigeon% 

 something like this (it's strange for me to put classes in another class,
 why do you want to do this ?)

pigeon% cat b.rb
#!/usr/bin/ruby
class A
   class A; end
   class B; end
end
A.constants.each do |kl|
   a = A.const_get(kl)
   b = Object.const_defined?(kl) && Object.const_get(kl)
   puts a if a != b && a.kind_of?(Module)
end
pigeon% 

pigeon% b.rb
A::A
A::B
pigeon% 

 you must adapt it, if it's not a toplevel class

Guy Decoux